Casing for mechanical fuse mechanisms



July 9, 1935. A. VARAUD CASI NG FOR MECHANICAL FUSE MECHANISMS Filed May31, 1934 29% J}; Mara;

Patented July 9, 1935 i nemverition reiates po a as ng rbr meghant calruse. mechanism. 1-;Thiscasmg is composed of a liiider -in one pe'l'of-which the end intended t contain the vablej frame orthemecnanisnr has axial slots intended to give acertain elasticitytothis eiid of the wall'of themasms, with a view to producing a frictionalgrip on the" saidmcbile framei j The annexed drawingrepresents anexample of construction'of a casing according to the inven: tion, andalso shows a section of a casing of the usual type.

Fig. 1 is a section of theusual typeof casing,

Fig. 2 is a view in elevation of a form of construction of the improvedcasing of this invention, of which: i

Fig. 3 is a vertical section on line III-III of Fig. 4.

Fig. 4 is a plan view of Fig. 3.

Fig. 5 is a section on line V--V of Figs. 2 and 3.

Casings for the purpose described hitherto used are in two parts formingtwo half-cylinders l and 2, as shown in section in Fig. 1.

As is known, in certain types of mechanical fuse, as shown for examplein U S. Patent No.

1,665,899, themechanism comprises two frames, one of which is fixed andcarries the motor members and the driving gear of the fuse hammer, andthe other is movable and carries theregulator members.

In the mounting of casingsof the type shown in Fig. 1, the two parts- Iand 2 of the casing are screwed by means of screws passingthroughorifices 3, on the fixed frame of the mechanism,

the movable frame being simply held by pressure 1 between the halves ofthe casing and the centering I 40 'i difficulty, the casing according tothe invention of the members being effected with a certain difculty atthe tightening ofthe above mentioned screws. For the purpose ofeliminating this centering is formed of aone piece, cylinder 4illustratedin Figs. 2 to 5.

The cylinder is provided with orifices 5 for the passage 'of screwsintended to immobilize the fixed frame of the fuse mechanism and is alsoprovided with'axial slots 6, four in number in the example shown, theseslots starting from the end of the casing in .whichithe movable partcontains the regulator members of the mechanism.

The fixed frame and the casing are of such dimensions that the formerfits exactly in the latter, while the movable frame and'the part of thecasing for its accommodation are of such di- LECKSING FORZFMECH ANIGAHFIISE MECHANISMS r ll f ,v t tfienfi w twi am ilip ieatiduiliiay s1,1934PSerial 728,432 r u Switzerland June 7, 1933- f -L a se).

mansions that the said movable frame can only be inserted in thecasingthrough acertain effort necessitating afslight yielding of the walls of.the latter, allowedjor' byithe slots Wmen'give a certain "elasticity: toIthispart of the casing. 4

Inside the casingfiangesor-ribs such as! t can be priivided'andamachined part such: 8110perating" as} asupportfor the correct placingin position of both frames of the mechanism, the

y flanges I and 8 serving, in particular, as distance 7 stops betweenthe two frames.

Finally, the lateral orifices of the casing, needed for thefregulationof the regulator members, can

jectiles having a fixed frame and a movable frame, a casing for saidframes comprising a one-piece hollow cylindrical member adapted toreceive the movable frame in one end thereof andthe fixed frame in theother end, the cylindrical wall of the end of the casing adapted toreceive the movable frame being provided with an axially extending slotto impart elasticity thereto and to frictionally retain the movableframe in said casing.

2. In a mechanical fuse mechanism for projectiles having a fixed frameand a movable frame, a casingfor said frames comprising a one-piecehollow cylindrical member adapted to receive the movable frame in oneend thereof and the fixed frame in the other end, the cylindrical wallof the end of the casing adapted to receive the movable frame beingprovided with an axially extending slot to impart elasticity thereto andto frictionally retain the movable frame in said casing, and meanscarried by the interior of said casing for supporting the framestherein.

3. In a mechanical fuse mechanism forprojectiles having a fixed frameand a movable I frame, a casing for said frames comprising a onedricalwall of the end of the casing adapted to receive the movable frame beingprovided with an axially extending slot to impart-elasticity thereto andto frictionally retain the movable frame in said casing, said casinghaving a lateral orifice formed in the slotted wall thereof across aslot to provide access to the movable frame. I

5. In a mechanical fuse mechanism for projectiles having a fixed frameand a movable frame, a casing for saidframes comprising a one-piecehollow cylindrical member adapted to receive the movable frame inione.endthereof and'the fixed frame, in theother end, thecylindrical wall ofthe end ofthe casing adapted to receive the movable frame being providedwith an axially extending slot to impart elasticity thereto and tofrictionally retain the movable frame in said casing, and annular ribson the interior of said casing for supporting the frames therein.

6. In a mechanical fuse mechanism for projectiles having a fixed frameand a movable frame, a casing for said frames comprising a one-piecehollow cylindrical member adapted to receive the movable frame in oneend thereof and the fixed frame in .the other end, the cylindrical wallof the end of the casing adapted-to receive the movable frame beingprovided with" an axially extending slot to impart elasticity theretoand to frictionally retain the movable frame in said casing, and annularribs on the interior of said casing for supporting the frames therein,said casing having a lateral orifice formed in the slotted wall thereofacross a slot to provide access to the movable frame.

7. In a mechanical fuse mechanism for projectiles having a movableframe, a casing for "said'frame' comprising a one-piece hollowcylindrical member adapted to receive the movable frame in one endthereof, the cylindrical wall of; the end of: the casing adapted toreceive themovable frame being provided" with an axially extending slotto impart elasticity thereto and to frictionally retain the movableframe insaid casi N RE'VARAUD. e

